Rev. Thomas Case:
OBJECTION. But who is able to spend the whole twenty-four hours in religious duties without any intermission?
ANSWER. None; neither is it required: for neither do we ourselves on our days spend the whole twenty-four hours in the employments of our particular places and callings; but we allow ourselves a sleeping time, and a time for preparing our food, and a time for eating and drinking, and other refreshments of nature, both for ourselves and our relations. And so doth God also, provided always,
1. That we be not over-lavish and prodigal in our indulgences to the flesh, and the concernments of the outward man, that we exceed not our limits of Christian sobriety and moderation.
2. Provided that we do not those things with common spirits. We must eat, and drink, and sleep, as part of the sabbath-work, with heavenly minds, and sabbath-affections.
~James Nichols, Puritan Sermons, vol. 2 (Wheaton, IL: Richard Owen Roberts, Publishers, 1981), 33.
Source: http://www.puritanboard.com/showthread.php/90810-Physical-Rest-on-the-Lord-s-Day, Comment #33